A precast fair-faced concrete slab

Abstract

This utility model relates to a precast concrete slab, comprising a main body, a sound insulation board, steel channels, a first connecting cylinder, and a second connecting cylinder. The main body is made of pressed concrete and is rectangular. Steel channels are embedded at the four corners of the front side of the main body. The steel channels are L-shaped and their two ends are respectively connected to any side of the main body. A first connecting cylinder is provided on the inner side of the horizontal end of the steel channel, and a second connecting cylinder is provided on the inner side of the vertical end of the steel channel. The steel channels of four adjacent main bodies are spliced ​​to form a U-shaped channel. After the main bodies are spliced, the gaps inside the U-shaped channel are used to fill concrete. The first connecting cylinder and the second connecting cylinder, which are opposite each other on the inner side of the U-shaped channel, are fixedly connected by threaded rods. The front side of the main body is covered with a sound insulation board, and mounting holes are provided on the front side of the main body. This utility model forms an integral structure by embedding L-shaped steel channels at the four corners of the main body and setting the first and second connecting cylinders, and using threaded rods to firmly connect adjacent precast slabs.

Description

Technical Field

[0001] This utility model relates to the field of fair-faced concrete technology, specifically to a precast fair-faced concrete slab. Background Technology

[0002] Exposed concrete is a style of architectural modernism, also known as decorative concrete due to its highly decorative effect. When used in interior spaces, it can be combined with industrial-style designs, using special molds such as bamboo texture to create natural textures and enhance the spatial quality. Exposed concrete can be directly applied to interior walls for decoration, and precast exposed concrete panels are commonly used for room partitions and interior wall decoration.

[0003] The existing precast concrete slabs use a spliced ​​structure, which has weak overall connections and unstable inter-slab connections. Their seismic performance is far lower than that of cast-in-place structures, and the precast slabs have poor sound insulation. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a fair-faced concrete precast slab in response to the above-mentioned shortcomings.

[0005] To solve the above technical problems, the present invention adopts the following technical solution:

[0006] A precast fair-faced concrete slab includes a main body, a sound insulation board, steel channels, a first connecting cylinder, and a second connecting cylinder. The main body is made of fair-faced concrete and is rectangular. Steel channels are embedded at the four corners of the front side of the main body. The steel channels are L-shaped and their two ends are respectively connected to the two adjacent sides of one corner of the main body. A first connecting cylinder for fixing two adjacent main bodies on the left and right sides is provided on the inner side of the horizontal end of the steel channel. A second connecting cylinder for fixing two adjacent main bodies on the vertical end of the steel channel is provided on the inner side of the vertical end of the steel channel. After multiple main bodies are spliced, four adjacent steel channels can be spliced ​​to form a closed U-shaped channel. The gap inside the U-shaped channel after the main bodies are spliced ​​is used to fill concrete. The two first connecting cylinders and two second connecting cylinders on opposite sides of the U-shaped channel are fixedly connected by threaded rods. The front side of the main body is covered with a sound insulation board, and the front side of the main body is provided with mounting holes for fixing to the building wall by expansion bolts.

[0007] Furthermore, sound-absorbing cloth is provided between adjacent motherboard bodies.

[0008] Furthermore, the main body has rib holes on its upper side and right side for inserting connecting ribs when connecting with the cast wall.

[0009] Furthermore, the front side of the main body has a connecting hole for connecting expansion bolts, and the sound insulation plate has a positioning hole corresponding to the connecting hole. The expansion bolt is used to pass through the positioning hole and the connecting hole to fix the sound insulation plate to the main body. The positioning hole is a countersunk hole.

[0010] Furthermore, the front sound insulation panels are staggered relative to the main body, and the boundary lines of two adjacent main bodies are staggered with the boundary lines of two adjacent sound insulation panels, so that the gap between two adjacent main bodies can be covered by the sound insulation panels.

[0011] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages:

[0012] This invention utilizes L-shaped steel channels embedded at the four corners of the main panel and incorporates first and second connecting cylinders. Threaded rods are used to securely connect adjacent precast slabs, forming an integrated structure. After splicing, the steel channels form a U-shaped groove and are filled with concrete, further strengthening the connection and significantly improving seismic performance, overcoming the weakness of existing splicing structures. The front of the main panel is covered with a sound-insulating board, and sound-insulating cloth is added between adjacent precast slabs. This double sound insulation design effectively blocks sound transmission, solving the problem of poor sound insulation performance in existing precast slabs and improving indoor space comfort. The precast slabs adopt a standardized design, allowing for rapid positioning and splicing of the steel channels and connecting cylinders. The U-shaped groove concrete filling process simplifies on-site operations. The staggered installation design of the sound-insulating boards avoids misalignment of gaps, improving sound insulation continuity and making construction more flexible and efficient.

[0013] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0014] Figure 1 This is a front structural diagram of the present invention;

[0015] Figure 2 A schematic diagram of the front splicing structure of the main body;

[0016] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 This is a front sectional view of the motherboard.

[0018] Figure 5 This is a cross-sectional view of the connection structure between the main body and the sound insulation plate.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1. Main body; 2. Sound insulation board; 3. Steel channel; 4. First connecting cylinder; 5. Second connecting cylinder; 6. Mounting hole; 7. Sound insulation cloth; 8. Rib hole; 9. Connecting hole; 10. Positioning hole. Detailed Implementation

[0021] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] like Figure 1-5 As shown, a precast fair-faced concrete slab includes a main body 1, a sound insulation board 2, a steel channel 3, a first connecting cylinder 4, and a second connecting cylinder 5. The main body 1 is made of fair-faced concrete and is rectangular. A steel channel 3 is embedded at each of the four corners of the front side of the main body 1. The steel channel 3 is L-shaped and its two ends are respectively connected to the two adjacent sides of one corner of the main body 1. A first connecting cylinder 4 is provided on the inner side of the horizontal end of the steel channel 3 for fixing two adjacent main bodies 1 on the left and right. A second connecting cylinder 5 is provided on the inner side of the vertical end of the steel channel 3 for fixing two adjacent main bodies 1 on the top and bottom. After multiple main bodies 1 are spliced, four adjacent steel channels 3 can be spliced ​​to form a closed U-shaped channel. The gap inside the U-shaped channel after the main bodies 1 are spliced ​​is used to fill concrete. The two first connecting cylinders 4 and the two second connecting cylinders 5 on the inner side of the U-shaped channel are fixedly connected by threaded rods. The front side of the main body 1 is covered with a sound insulation board 2. The front side of the main body 1 is provided with mounting holes 6 for fixing to the building wall by expansion bolts.

[0024] As one implementation method, a sound-insulating cloth 7 is provided between adjacent mainboard bodies 1.

[0025] In one embodiment, the main body 1 has rib holes 8 on its upper side and right side for inserting connecting ribs when connecting with the cast wall.

[0026] In one embodiment, the front side of the main body 1 is provided with a connecting hole 9 for connecting expansion bolts, and the sound insulation plate 2 is provided with a positioning hole 10 corresponding to the connecting hole 9. The expansion bolt is used to pass through the positioning hole 10 and the connecting hole 9 to fix the sound insulation plate 2 to the main body 1. The positioning hole 10 is a countersunk hole.

[0027] In one implementation, the front sound insulation panel 2 is staggered relative to the main body 1, and the boundary lines of two adjacent main bodies 1 are staggered with the boundary lines of two adjacent sound insulation panels 2, so that the gap between two adjacent main bodies 1 can be covered by the sound insulation panel 2.

[0028] The workflow of this utility model is as follows: Align the steel channels 3 of adjacent precast slabs so that the first connecting cylinders 4 of the left and right slabs and the second connecting cylinders 5 of the upper and lower slabs form a coaxial connection. The boundaries of the sound insulation boards 2 are staggered with the boundaries of the main body 1, and a sound insulation cloth 7 is laid between two adjacent main bodies. The mounting holes 6 on the front side of the main body 1 are initially fixed to the building wall using expansion bolts to prevent displacement during the splicing process. The threaded rods are passed through the corresponding first connecting cylinders 4 and second connecting cylinders 5 in sequence and locked with nuts to form a mechanical interlocking structure, ensuring a firm connection between adjacent slabs in the horizontal and vertical directions. After splicing, the steel channels 3 form a closed U-shaped channel. High-strength concrete or grout is poured into the channel; it is vibrated to compact and the surface is smoothed, so that the concrete, steel channels 3, and main body 1 form an integral whole, further improving shear resistance and seismic performance. If it is necessary to combine with a cast-in-place wall, reinforcing bars are inserted into the reinforcing hole 8 of the main body 1, and concrete is poured to achieve a reliable connection between the precast and cast-in-place structures. The sound insulation board 2 is placed on the front side of the main body 1, and the sound insulation board 2 is fixed to the main body 1 by means of expansion bolts passing through the countersunk positioning hole 10 and the connecting hole 9. The countersunk design ensures that the surface is flat.

[0029] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. A precast fair-faced concrete slab, characterized in that, The system includes a main body (1), a sound insulation board (2), a steel channel (3), a first connecting cylinder (4), and a second connecting cylinder (5). The main body (1) is made of fair-faced concrete and is rectangular. A steel channel (3) is embedded in each of the four corners of the front side of the main body (1). The steel channel (3) is L-shaped and its two ends are respectively connected to the two adjacent sides of one corner of the main body (1). The inner side of the horizontal end of the steel channel (3) is provided with a first connecting cylinder (4) for fixing two adjacent main bodies (1) on the left and right. The inner side of the vertical end of the steel channel (3) is provided with a first connecting cylinder (4) for fixing two adjacent main bodies (1) on the left and right. The second connecting cylinder (5) is fixedly connected to two adjacent main bodies (1). After multiple main bodies (1) are spliced ​​together, four adjacent steel channels (3) can be spliced ​​into a closed U-shaped channel. After the main bodies (1) are spliced ​​together, the gap inside the U-shaped channel is used to fill concrete. The two first connecting cylinders (4) and two second connecting cylinders (5) on opposite sides of the U-shaped channel are fixedly connected by threaded rods. The front side of the main body (1) is covered with a sound insulation board (2). The front side of the main body (1) is provided with an installation hole (6) for fixed connection with the building wall by expansion bolts.

2. A fair-faced concrete precast slab according to claim 1, wherein A sound-insulating cloth (7) is provided between adjacent main body (1).

3. The fair-faced concrete precast slab according to claim 1, characterized in that, The main body (1) has rib holes (8) on its upper side and right side for inserting connecting bars when connecting with the cast wall.

4. The precast fair-faced concrete slab according to claim 1, characterized in that, The front side of the main body (1) is provided with a connecting hole (9) for connecting expansion bolts, and the sound insulation plate (2) is provided with a positioning hole (10) corresponding to the connecting hole (9). The expansion bolt is used to pass through the positioning hole (10) and the connecting hole (9) to fix the sound insulation plate (2) to the main body (1). The positioning hole (10) is a countersunk hole.

5. The fair-faced concrete precast slab according to claim 1, wherein, The front soundproof panel (2) is staggered relative to the main body (1). The boundary lines of two adjacent main bodies (1) are staggered with the boundary lines of two adjacent soundproof panels (2), so that the gap between two adjacent main bodies (1) can be covered by the soundproof panel (2).

Images